J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.net; |
| 27 | |
| 28 | import java.util.Enumeration; |
| 29 | import java.util.Vector; |
| 30 | import java.util.List; |
| 31 | import java.util.ArrayList; |
| 32 | import java.util.Collections; |
| 33 | import java.util.StringTokenizer; |
| 34 | import java.net.InetAddress; |
| 35 | import java.security.Permission; |
| 36 | import java.security.PermissionCollection; |
| 37 | import java.io.Serializable; |
| 38 | import java.io.ObjectStreamField; |
| 39 | import java.io.ObjectOutputStream; |
| 40 | import java.io.ObjectInputStream; |
| 41 | import java.io.IOException; |
| 42 | import sun.net.util.IPAddressUtil; |
| 43 | import sun.security.util.SecurityConstants; |
| 44 | |
| 45 | |
| 46 | /** |
| 47 | * This class represents access to a network via sockets. |
| 48 | * A SocketPermission consists of a |
| 49 | * host specification and a set of "actions" specifying ways to |
| 50 | * connect to that host. The host is specified as |
| 51 | * <pre> |
| 52 | * host = (hostname | IPv4address | iPv6reference) [:portrange] |
| 53 | * portrange = portnumber | -portnumber | portnumber-[portnumber] |
| 54 | * </pre> |
| 55 | * The host is expressed as a DNS name, as a numerical IP address, |
| 56 | * or as "localhost" (for the local machine). |
| 57 | * The wildcard "*" may be included once in a DNS name host |
| 58 | * specification. If it is included, it must be in the leftmost |
| 59 | * position, as in "*.sun.com". |
| 60 | * <p> |
| 61 | * The format of the IPv6reference should follow that specified in <a |
| 62 | * href="http://www.ietf.org/rfc/rfc2732.txt"><i>RFC 2732: Format |
| 63 | * for Literal IPv6 Addresses in URLs</i></a>: |
| 64 | * <pre> |
| 65 | * ipv6reference = "[" IPv6address "]" |
| 66 | *</pre> |
| 67 | * For example, you can construct a SocketPermission instance |
| 68 | * as the following: |
| 69 | * <pre> |
| 70 | * String hostAddress = inetaddress.getHostAddress(); |
| 71 | * if (inetaddress instanceof Inet6Address) { |
| 72 | * sp = new SocketPermission("[" + hostAddress + "]:" + port, action); |
| 73 | * } else { |
| 74 | * sp = new SocketPermission(hostAddress + ":" + port, action); |
| 75 | * } |
| 76 | * </pre> |
| 77 | * or |
| 78 | * <pre> |
| 79 | * String host = url.getHost(); |
| 80 | * sp = new SocketPermission(host + ":" + port, action); |
| 81 | * </pre> |
| 82 | * <p> |
| 83 | * The <A HREF="Inet6Address.html#lform">full uncompressed form</A> of |
| 84 | * an IPv6 literal address is also valid. |
| 85 | * <p> |
| 86 | * The port or portrange is optional. A port specification of the |
| 87 | * form "N-", where <i>N</i> is a port number, signifies all ports |
| 88 | * numbered <i>N</i> and above, while a specification of the |
| 89 | * form "-N" indicates all ports numbered <i>N</i> and below. |
| 90 | * <p> |
| 91 | * The possible ways to connect to the host are |
| 92 | * <pre> |
| 93 | * accept |
| 94 | * connect |
| 95 | * listen |
| 96 | * resolve |
| 97 | * </pre> |
| 98 | * The "listen" action is only meaningful when used with "localhost". |
| 99 | * The "resolve" action is implied when any of the other actions are present. |
| 100 | * The action "resolve" refers to host/ip name service lookups. |
| 101 | * <P> |
| 102 | * The actions string is converted to lowercase before processing. |
| 103 | * <p>As an example of the creation and meaning of SocketPermissions, |
| 104 | * note that if the following permission: |
| 105 | * |
| 106 | * <pre> |
| 107 | * p1 = new SocketPermission("puffin.eng.sun.com:7777", "connect,accept"); |
| 108 | * </pre> |
| 109 | * |
| 110 | * is granted to some code, it allows that code to connect to port 7777 on |
| 111 | * <code>puffin.eng.sun.com</code>, and to accept connections on that port. |
| 112 | * |
| 113 | * <p>Similarly, if the following permission: |
| 114 | * |
| 115 | * <pre> |
| 116 | * p1 = new SocketPermission("puffin.eng.sun.com:7777", "connect,accept"); |
| 117 | * p2 = new SocketPermission("localhost:1024-", "accept,connect,listen"); |
| 118 | * </pre> |
| 119 | * |
| 120 | * is granted to some code, it allows that code to |
| 121 | * accept connections on, connect to, or listen on any port between |
| 122 | * 1024 and 65535 on the local host. |
| 123 | * |
| 124 | * <p>Note: Granting code permission to accept or make connections to remote |
| 125 | * hosts may be dangerous because malevolent code can then more easily |
| 126 | * transfer and share confidential data among parties who may not |
| 127 | * otherwise have access to the data. |
| 128 | * |
| 129 | * @see java.security.Permissions |
| 130 | * @see SocketPermission |
| 131 | * |
| 132 | * |
| 133 | * @author Marianne Mueller |
| 134 | * @author Roland Schemers |
| 135 | * |
| 136 | * @serial exclude |
| 137 | */ |
| 138 | |
| 139 | public final class SocketPermission extends Permission |
| 140 | implements java.io.Serializable |
| 141 | { |
| 142 | private static final long serialVersionUID = -7204263841984476862L; |
| 143 | |
| 144 | /** |
| 145 | * Connect to host:port |
| 146 | */ |
| 147 | private final static int CONNECT = 0x1; |
| 148 | |
| 149 | /** |
| 150 | * Listen on host:port |
| 151 | */ |
| 152 | private final static int LISTEN = 0x2; |
| 153 | |
| 154 | /** |
| 155 | * Accept a connection from host:port |
| 156 | */ |
| 157 | private final static int ACCEPT = 0x4; |
| 158 | |
| 159 | /** |
| 160 | * Resolve DNS queries |
| 161 | */ |
| 162 | private final static int RESOLVE = 0x8; |
| 163 | |
| 164 | /** |
| 165 | * No actions |
| 166 | */ |
| 167 | private final static int NONE = 0x0; |
| 168 | |
| 169 | /** |
| 170 | * All actions |
| 171 | */ |
| 172 | private final static int ALL = CONNECT|LISTEN|ACCEPT|RESOLVE; |
| 173 | |
| 174 | // various port constants |
| 175 | private static final int PORT_MIN = 0; |
| 176 | private static final int PORT_MAX = 65535; |
| 177 | private static final int PRIV_PORT_MAX = 1023; |
| 178 | |
| 179 | // the actions mask |
| 180 | private transient int mask; |
| 181 | |
| 182 | /** |
| 183 | * the actions string. |
| 184 | * |
| 185 | * @serial |
| 186 | */ |
| 187 | |
| 188 | private String actions; // Left null as long as possible, then |
| 189 | // created and re-used in the getAction function. |
| 190 | |
| 191 | // hostname part as it is passed |
| 192 | private transient String hostname; |
| 193 | |
| 194 | // the canonical name of the host |
| 195 | // in the case of "*.foo.com", cname is ".foo.com". |
| 196 | |
| 197 | private transient String cname; |
| 198 | |
| 199 | // all the IP addresses of the host |
| 200 | private transient InetAddress[] addresses; |
| 201 | |
| 202 | // true if the hostname is a wildcard (e.g. "*.sun.com") |
| 203 | private transient boolean wildcard; |
| 204 | |
| 205 | // true if we were initialized with a single numeric IP address |
| 206 | private transient boolean init_with_ip; |
| 207 | |
| 208 | // true if this SocketPermission represents an invalid/unknown host |
| 209 | // used for implies when the delayed lookup has already failed |
| 210 | private transient boolean invalid; |
| 211 | |
| 212 | // port range on host |
| 213 | private transient int[] portrange; |
| 214 | |
| 215 | // true if the trustProxy system property is set |
| 216 | private static boolean trustProxy; |
| 217 | |
| 218 | static { |
| 219 | Boolean tmp = java.security.AccessController.doPrivileged( |
| 220 | new sun.security.action.GetBooleanAction("trustProxy")); |
| 221 | trustProxy = tmp.booleanValue(); |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Creates a new SocketPermission object with the specified actions. |
| 226 | * The host is expressed as a DNS name, or as a numerical IP address. |
| 227 | * Optionally, a port or a portrange may be supplied (separated |
| 228 | * from the DNS name or IP address by a colon). |
| 229 | * <p> |
| 230 | * To specify the local machine, use "localhost" as the <i>host</i>. |
| 231 | * Also note: An empty <i>host</i> String ("") is equivalent to "localhost". |
| 232 | * <p> |
| 233 | * The <i>actions</i> parameter contains a comma-separated list of the |
| 234 | * actions granted for the specified host (and port(s)). Possible actions are |
| 235 | * "connect", "listen", "accept", "resolve", or |
| 236 | * any combination of those. "resolve" is automatically added |
| 237 | * when any of the other three are specified. |
| 238 | * <p> |
| 239 | * Examples of SocketPermission instantiation are the following: |
| 240 | * <pre> |
| 241 | * nr = new SocketPermission("www.catalog.com", "connect"); |
| 242 | * nr = new SocketPermission("www.sun.com:80", "connect"); |
| 243 | * nr = new SocketPermission("*.sun.com", "connect"); |
| 244 | * nr = new SocketPermission("*.edu", "resolve"); |
| 245 | * nr = new SocketPermission("204.160.241.0", "connect"); |
| 246 | * nr = new SocketPermission("localhost:1024-65535", "listen"); |
| 247 | * nr = new SocketPermission("204.160.241.0:1024-65535", "connect"); |
| 248 | * </pre> |
| 249 | * |
| 250 | * @param host the hostname or IPaddress of the computer, optionally |
| 251 | * including a colon followed by a port or port range. |
| 252 | * @param action the action string. |
| 253 | */ |
| 254 | public SocketPermission(String host, String action) { |
| 255 | super(getHost(host)); |
| 256 | // name initialized to getHost(host); NPE detected in getHost() |
| 257 | init(getName(), getMask(action)); |
| 258 | } |
| 259 | |
| 260 | |
| 261 | SocketPermission(String host, int mask) { |
| 262 | super(getHost(host)); |
| 263 | // name initialized to getHost(host); NPE detected in getHost() |
| 264 | init(getName(), mask); |
| 265 | } |
| 266 | |
| 267 | private static String getHost(String host) |
| 268 | { |
| 269 | if (host.equals("")) { |
| 270 | return "localhost"; |
| 271 | } else { |
| 272 | /* IPv6 literal address used in this context should follow |
| 273 | * the format specified in RFC 2732; |
| 274 | * if not, we try to solve the unambiguous case |
| 275 | */ |
| 276 | int ind; |
| 277 | if (host.charAt(0) != '[') { |
| 278 | if ((ind = host.indexOf(':')) != host.lastIndexOf(':')) { |
| 279 | /* More than one ":", meaning IPv6 address is not |
| 280 | * in RFC 2732 format; |
| 281 | * We will rectify user errors for all unambiguious cases |
| 282 | */ |
| 283 | StringTokenizer st = new StringTokenizer(host, ":"); |
| 284 | int tokens = st.countTokens(); |
| 285 | if (tokens == 9) { |
| 286 | // IPv6 address followed by port |
| 287 | ind = host.lastIndexOf(':'); |
| 288 | host = "[" + host.substring(0, ind) + "]" + |
| 289 | host.substring(ind); |
| 290 | } else if (tokens == 8 && host.indexOf("::") == -1) { |
| 291 | // IPv6 address only, not followed by port |
| 292 | host = "[" + host + "]"; |
| 293 | } else { |
| 294 | // could be ambiguous |
| 295 | throw new IllegalArgumentException("Ambiguous"+ |
| 296 | " hostport part"); |
| 297 | } |
| 298 | } |
| 299 | } |
| 300 | return host; |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | private int[] parsePort(String port) |
| 305 | throws Exception |
| 306 | { |
| 307 | |
| 308 | if (port == null || port.equals("") || port.equals("*")) { |
| 309 | return new int[] {PORT_MIN, PORT_MAX}; |
| 310 | } |
| 311 | |
| 312 | int dash = port.indexOf('-'); |
| 313 | |
| 314 | if (dash == -1) { |
| 315 | int p = Integer.parseInt(port); |
| 316 | return new int[] {p, p}; |
| 317 | } else { |
| 318 | String low = port.substring(0, dash); |
| 319 | String high = port.substring(dash+1); |
| 320 | int l,h; |
| 321 | |
| 322 | if (low.equals("")) { |
| 323 | l = PORT_MIN; |
| 324 | } else { |
| 325 | l = Integer.parseInt(low); |
| 326 | } |
| 327 | |
| 328 | if (high.equals("")) { |
| 329 | h = PORT_MAX; |
| 330 | } else { |
| 331 | h = Integer.parseInt(high); |
| 332 | } |
| 333 | if (l < 0 || h < 0 || h<l) |
| 334 | throw new IllegalArgumentException("invalid port range"); |
| 335 | |
| 336 | return new int[] {l, h}; |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | /** |
| 341 | * Initialize the SocketPermission object. We don't do any DNS lookups |
| 342 | * as this point, instead we hold off until the implies method is |
| 343 | * called. |
| 344 | */ |
| 345 | private void init(String host, int mask) { |
| 346 | // Set the integer mask that represents the actions |
| 347 | |
| 348 | if ((mask & ALL) != mask) |
| 349 | throw new IllegalArgumentException("invalid actions mask"); |
| 350 | |
| 351 | // always OR in RESOLVE if we allow any of the others |
| 352 | this.mask = mask | RESOLVE; |
| 353 | |
| 354 | // Parse the host name. A name has up to three components, the |
| 355 | // hostname, a port number, or two numbers representing a port |
| 356 | // range. "www.sun.com:8080-9090" is a valid host name. |
| 357 | |
| 358 | // With IPv6 an address can be 2010:836B:4179::836B:4179 |
| 359 | // An IPv6 address needs to be enclose in [] |
| 360 | // For ex: [2010:836B:4179::836B:4179]:8080-9090 |
| 361 | // Refer to RFC 2732 for more information. |
| 362 | |
| 363 | int rb = 0 ; |
| 364 | int start = 0, end = 0; |
| 365 | int sep = -1; |
| 366 | String hostport = host; |
| 367 | if (host.charAt(0) == '[') { |
| 368 | start = 1; |
| 369 | rb = host.indexOf(']'); |
| 370 | if (rb != -1) { |
| 371 | host = host.substring(start, rb); |
| 372 | } else { |
| 373 | throw new |
| 374 | IllegalArgumentException("invalid host/port: "+host); |
| 375 | } |
| 376 | sep = hostport.indexOf(':', rb+1); |
| 377 | } else { |
| 378 | start = 0; |
| 379 | sep = host.indexOf(':', rb); |
| 380 | end = sep; |
| 381 | if (sep != -1) { |
| 382 | host = host.substring(start, end); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | if (sep != -1) { |
| 387 | String port = hostport.substring(sep+1); |
| 388 | try { |
| 389 | portrange = parsePort(port); |
| 390 | } catch (Exception e) { |
| 391 | throw new |
| 392 | IllegalArgumentException("invalid port range: "+port); |
| 393 | } |
| 394 | } else { |
| 395 | portrange = new int[] { PORT_MIN, PORT_MAX }; |
| 396 | } |
| 397 | |
| 398 | hostname = host; |
| 399 | |
| 400 | // is this a domain wildcard specification |
| 401 | if (host.lastIndexOf('*') > 0) { |
| 402 | throw new |
| 403 | IllegalArgumentException("invalid host wildcard specification"); |
| 404 | } else if (host.startsWith("*")) { |
| 405 | wildcard = true; |
| 406 | if (host.equals("*")) { |
| 407 | cname = ""; |
| 408 | } else if (host.startsWith("*.")) { |
| 409 | cname = host.substring(1).toLowerCase(); |
| 410 | } else { |
| 411 | throw new |
| 412 | IllegalArgumentException("invalid host wildcard specification"); |
| 413 | } |
| 414 | return; |
| 415 | } else { |
| 416 | if (host.length() > 0) { |
| 417 | // see if we are being initialized with an IP address. |
| 418 | char ch = host.charAt(0); |
| 419 | if (ch == ':' || Character.digit(ch, 16) != -1) { |
| 420 | byte ip[] = IPAddressUtil.textToNumericFormatV4(host); |
| 421 | if (ip == null) { |
| 422 | ip = IPAddressUtil.textToNumericFormatV6(host); |
| 423 | } |
| 424 | if (ip != null) { |
| 425 | try { |
| 426 | addresses = |
| 427 | new InetAddress[] |
| 428 | {InetAddress.getByAddress(ip) }; |
| 429 | init_with_ip = true; |
| 430 | } catch (UnknownHostException uhe) { |
| 431 | // this shouldn't happen |
| 432 | invalid = true; |
| 433 | } |
| 434 | } |
| 435 | } |
| 436 | } |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * Convert an action string to an integer actions mask. |
| 442 | * |
| 443 | * @param action the action string |
| 444 | * @return the action mask |
| 445 | */ |
| 446 | private static int getMask(String action) { |
| 447 | |
| 448 | if (action == null) { |
| 449 | throw new NullPointerException("action can't be null"); |
| 450 | } |
| 451 | |
| 452 | if (action.equals("")) { |
| 453 | throw new IllegalArgumentException("action can't be empty"); |
| 454 | } |
| 455 | |
| 456 | int mask = NONE; |
| 457 | |
| 458 | // Check against use of constants (used heavily within the JDK) |
| 459 | if (action == SecurityConstants.SOCKET_RESOLVE_ACTION) { |
| 460 | return RESOLVE; |
| 461 | } else if (action == SecurityConstants.SOCKET_CONNECT_ACTION) { |
| 462 | return CONNECT; |
| 463 | } else if (action == SecurityConstants.SOCKET_LISTEN_ACTION) { |
| 464 | return LISTEN; |
| 465 | } else if (action == SecurityConstants.SOCKET_ACCEPT_ACTION) { |
| 466 | return ACCEPT; |
| 467 | } else if (action == SecurityConstants.SOCKET_CONNECT_ACCEPT_ACTION) { |
| 468 | return CONNECT|ACCEPT; |
| 469 | } |
| 470 | |
| 471 | char[] a = action.toCharArray(); |
| 472 | |
| 473 | int i = a.length - 1; |
| 474 | if (i < 0) |
| 475 | return mask; |
| 476 | |
| 477 | while (i != -1) { |
| 478 | char c; |
| 479 | |
| 480 | // skip whitespace |
| 481 | while ((i!=-1) && ((c = a[i]) == ' ' || |
| 482 | c == '\r' || |
| 483 | c == '\n' || |
| 484 | c == '\f' || |
| 485 | c == '\t')) |
| 486 | i--; |
| 487 | |
| 488 | // check for the known strings |
| 489 | int matchlen; |
| 490 | |
| 491 | if (i >= 6 && (a[i-6] == 'c' || a[i-6] == 'C') && |
| 492 | (a[i-5] == 'o' || a[i-5] == 'O') && |
| 493 | (a[i-4] == 'n' || a[i-4] == 'N') && |
| 494 | (a[i-3] == 'n' || a[i-3] == 'N') && |
| 495 | (a[i-2] == 'e' || a[i-2] == 'E') && |
| 496 | (a[i-1] == 'c' || a[i-1] == 'C') && |
| 497 | (a[i] == 't' || a[i] == 'T')) |
| 498 | { |
| 499 | matchlen = 7; |
| 500 | mask |= CONNECT; |
| 501 | |
| 502 | } else if (i >= 6 && (a[i-6] == 'r' || a[i-6] == 'R') && |
| 503 | (a[i-5] == 'e' || a[i-5] == 'E') && |
| 504 | (a[i-4] == 's' || a[i-4] == 'S') && |
| 505 | (a[i-3] == 'o' || a[i-3] == 'O') && |
| 506 | (a[i-2] == 'l' || a[i-2] == 'L') && |
| 507 | (a[i-1] == 'v' || a[i-1] == 'V') && |
| 508 | (a[i] == 'e' || a[i] == 'E')) |
| 509 | { |
| 510 | matchlen = 7; |
| 511 | mask |= RESOLVE; |
| 512 | |
| 513 | } else if (i >= 5 && (a[i-5] == 'l' || a[i-5] == 'L') && |
| 514 | (a[i-4] == 'i' || a[i-4] == 'I') && |
| 515 | (a[i-3] == 's' || a[i-3] == 'S') && |
| 516 | (a[i-2] == 't' || a[i-2] == 'T') && |
| 517 | (a[i-1] == 'e' || a[i-1] == 'E') && |
| 518 | (a[i] == 'n' || a[i] == 'N')) |
| 519 | { |
| 520 | matchlen = 6; |
| 521 | mask |= LISTEN; |
| 522 | |
| 523 | } else if (i >= 5 && (a[i-5] == 'a' || a[i-5] == 'A') && |
| 524 | (a[i-4] == 'c' || a[i-4] == 'C') && |
| 525 | (a[i-3] == 'c' || a[i-3] == 'C') && |
| 526 | (a[i-2] == 'e' || a[i-2] == 'E') && |
| 527 | (a[i-1] == 'p' || a[i-1] == 'P') && |
| 528 | (a[i] == 't' || a[i] == 'T')) |
| 529 | { |
| 530 | matchlen = 6; |
| 531 | mask |= ACCEPT; |
| 532 | |
| 533 | } else { |
| 534 | // parse error |
| 535 | throw new IllegalArgumentException( |
| 536 | "invalid permission: " + action); |
| 537 | } |
| 538 | |
| 539 | // make sure we didn't just match the tail of a word |
| 540 | // like "ackbarfaccept". Also, skip to the comma. |
| 541 | boolean seencomma = false; |
| 542 | while (i >= matchlen && !seencomma) { |
| 543 | switch(a[i-matchlen]) { |
| 544 | case ',': |
| 545 | seencomma = true; |
| 546 | /*FALLTHROUGH*/ |
| 547 | case ' ': case '\r': case '\n': |
| 548 | case '\f': case '\t': |
| 549 | break; |
| 550 | default: |
| 551 | throw new IllegalArgumentException( |
| 552 | "invalid permission: " + action); |
| 553 | } |
| 554 | i--; |
| 555 | } |
| 556 | |
| 557 | // point i at the location of the comma minus one (or -1). |
| 558 | i -= matchlen; |
| 559 | } |
| 560 | |
| 561 | return mask; |
| 562 | } |
| 563 | |
| 564 | /** |
| 565 | * attempt to get the fully qualified domain name |
| 566 | * |
| 567 | */ |
| 568 | void getCanonName() |
| 569 | throws UnknownHostException |
| 570 | { |
| 571 | if (cname != null || invalid) return; |
| 572 | |
| 573 | // attempt to get the canonical name |
| 574 | |
| 575 | try { |
| 576 | // first get the IP addresses if we don't have them yet |
| 577 | // this is because we need the IP address to then get |
| 578 | // FQDN. |
| 579 | if (addresses == null) { |
| 580 | getIP(); |
| 581 | } |
| 582 | |
| 583 | // we have to do this check, otherwise we might not |
| 584 | // get the fully qualified domain name |
| 585 | if (init_with_ip) { |
| 586 | cname = addresses[0].getHostName(false).toLowerCase(); |
| 587 | } else { |
| 588 | cname = InetAddress.getByName(addresses[0].getHostAddress()). |
| 589 | getHostName(false).toLowerCase(); |
| 590 | } |
| 591 | } catch (UnknownHostException uhe) { |
| 592 | invalid = true; |
| 593 | throw uhe; |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | /** |
| 598 | * get IP addresses. Sets invalid to true if we can't get them. |
| 599 | * |
| 600 | */ |
| 601 | void getIP() |
| 602 | throws UnknownHostException |
| 603 | { |
| 604 | if (addresses != null || wildcard || invalid) return; |
| 605 | |
| 606 | try { |
| 607 | // now get all the IP addresses |
| 608 | String host; |
| 609 | if (getName().charAt(0) == '[') { |
| 610 | // Literal IPv6 address |
| 611 | host = getName().substring(1, getName().indexOf(']')); |
| 612 | } else { |
| 613 | int i = getName().indexOf(":"); |
| 614 | if (i == -1) |
| 615 | host = getName(); |
| 616 | else { |
| 617 | host = getName().substring(0,i); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | addresses = |
| 622 | new InetAddress[] {InetAddress.getAllByName0(host, false)[0]}; |
| 623 | |
| 624 | } catch (UnknownHostException uhe) { |
| 625 | invalid = true; |
| 626 | throw uhe; |
| 627 | } catch (IndexOutOfBoundsException iobe) { |
| 628 | invalid = true; |
| 629 | throw new UnknownHostException(getName()); |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Checks if this socket permission object "implies" the |
| 635 | * specified permission. |
| 636 | * <P> |
| 637 | * More specifically, this method first ensures that all of the following |
| 638 | * are true (and returns false if any of them are not):<p> |
| 639 | * <ul> |
| 640 | * <li> <i>p</i> is an instanceof SocketPermission,<p> |
| 641 | * <li> <i>p</i>'s actions are a proper subset of this |
| 642 | * object's actions, and<p> |
| 643 | * <li> <i>p</i>'s port range is included in this port range. Note: |
| 644 | * port range is ignored when p only contains the action, 'resolve'.<p> |
| 645 | * </ul> |
| 646 | * |
| 647 | * Then <code>implies</code> checks each of the following, in order, |
| 648 | * and for each returns true if the stated condition is true:<p> |
| 649 | * <ul> |
| 650 | * <li> If this object was initialized with a single IP address and one of <i>p</i>'s |
| 651 | * IP addresses is equal to this object's IP address.<p> |
| 652 | * <li>If this object is a wildcard domain (such as *.sun.com), and |
| 653 | * <i>p</i>'s canonical name (the name without any preceding *) |
| 654 | * ends with this object's canonical host name. For example, *.sun.com |
| 655 | * implies *.eng.sun.com..<p> |
| 656 | * <li>If this object was not initialized with a single IP address, and one of this |
| 657 | * object's IP addresses equals one of <i>p</i>'s IP addresses.<p> |
| 658 | * <li>If this canonical name equals <i>p</i>'s canonical name.<p> |
| 659 | * </ul> |
| 660 | * |
| 661 | * If none of the above are true, <code>implies</code> returns false. |
| 662 | * @param p the permission to check against. |
| 663 | * |
| 664 | * @return true if the specified permission is implied by this object, |
| 665 | * false if not. |
| 666 | */ |
| 667 | |
| 668 | public boolean implies(Permission p) { |
| 669 | int i,j; |
| 670 | |
| 671 | if (!(p instanceof SocketPermission)) |
| 672 | return false; |
| 673 | |
| 674 | if (p == this) |
| 675 | return true; |
| 676 | |
| 677 | SocketPermission that = (SocketPermission) p; |
| 678 | |
| 679 | return ((this.mask & that.mask) == that.mask) && |
| 680 | impliesIgnoreMask(that); |
| 681 | } |
| 682 | |
| 683 | /** |
| 684 | * Checks if the incoming Permission's action are a proper subset of |
| 685 | * the this object's actions. |
| 686 | * <P> |
| 687 | * Check, in the following order: |
| 688 | * <ul> |
| 689 | * <li> Checks that "p" is an instanceof a SocketPermission |
| 690 | * <li> Checks that "p"'s actions are a proper subset of the |
| 691 | * current object's actions. |
| 692 | * <li> Checks that "p"'s port range is included in this port range |
| 693 | * <li> If this object was initialized with an IP address, checks that |
| 694 | * one of "p"'s IP addresses is equal to this object's IP address. |
| 695 | * <li> If either object is a wildcard domain (i.e., "*.sun.com"), |
| 696 | * attempt to match based on the wildcard. |
| 697 | * <li> If this object was not initialized with an IP address, attempt |
| 698 | * to find a match based on the IP addresses in both objects. |
| 699 | * <li> Attempt to match on the canonical hostnames of both objects. |
| 700 | * </ul> |
| 701 | * @param p the incoming permission request |
| 702 | * |
| 703 | * @return true if "permission" is a proper subset of the current object, |
| 704 | * false if not. |
| 705 | */ |
| 706 | |
| 707 | boolean impliesIgnoreMask(SocketPermission that) { |
| 708 | int i,j; |
| 709 | |
| 710 | if ((that.mask & RESOLVE) != that.mask) { |
| 711 | // check port range |
| 712 | if ((that.portrange[0] < this.portrange[0]) || |
| 713 | (that.portrange[1] > this.portrange[1])) { |
| 714 | return false; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | // allow a "*" wildcard to always match anything |
| 719 | if (this.wildcard && "".equals(this.cname)) |
| 720 | return true; |
| 721 | |
| 722 | // return if either one of these NetPerm objects are invalid... |
| 723 | if (this.invalid || that.invalid) { |
| 724 | return (trustProxy ? inProxyWeTrust(that) : false); |
| 725 | } |
| 726 | |
| 727 | |
| 728 | if (this.getName().equalsIgnoreCase(that.getName())) { |
| 729 | return true; |
| 730 | } |
| 731 | |
| 732 | try { |
| 733 | if (this.init_with_ip) { // we only check IP addresses |
| 734 | if (that.wildcard) |
| 735 | return false; |
| 736 | |
| 737 | if (that.init_with_ip) { |
| 738 | return (this.addresses[0].equals(that.addresses[0])); |
| 739 | } else { |
| 740 | if (that.addresses == null) { |
| 741 | that.getIP(); |
| 742 | } |
| 743 | for (i=0; i < that.addresses.length; i++) { |
| 744 | if (this.addresses[0].equals(that.addresses[i])) |
| 745 | return true; |
| 746 | } |
| 747 | } |
| 748 | // since "this" was initialized with an IP address, we |
| 749 | // don't check any other cases |
| 750 | return false; |
| 751 | } |
| 752 | |
| 753 | // check and see if we have any wildcards... |
| 754 | if (this.wildcard || that.wildcard) { |
| 755 | // if they are both wildcards, return true iff |
| 756 | // that's cname ends with this cname (i.e., *.sun.com |
| 757 | // implies *.eng.sun.com) |
| 758 | if (this.wildcard && that.wildcard) |
| 759 | return (that.cname.endsWith(this.cname)); |
| 760 | |
| 761 | // a non-wildcard can't imply a wildcard |
| 762 | if (that.wildcard) |
| 763 | return false; |
| 764 | |
| 765 | // this is a wildcard, lets see if that's cname ends with |
| 766 | // it... |
| 767 | if (that.cname == null) { |
| 768 | that.getCanonName(); |
| 769 | } |
| 770 | return (that.cname.endsWith(this.cname)); |
| 771 | } |
| 772 | |
| 773 | // comapare IP addresses |
| 774 | if (this.addresses == null) { |
| 775 | this.getIP(); |
| 776 | } |
| 777 | |
| 778 | if (that.addresses == null) { |
| 779 | that.getIP(); |
| 780 | } |
| 781 | |
| 782 | for (j = 0; j < this.addresses.length; j++) { |
| 783 | for (i=0; i < that.addresses.length; i++) { |
| 784 | if (this.addresses[j].equals(that.addresses[i])) |
| 785 | return true; |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | // XXX: if all else fails, compare hostnames? |
| 790 | // Do we really want this? |
| 791 | if (this.cname == null) { |
| 792 | this.getCanonName(); |
| 793 | } |
| 794 | |
| 795 | if (that.cname == null) { |
| 796 | that.getCanonName(); |
| 797 | } |
| 798 | |
| 799 | return (this.cname.equalsIgnoreCase(that.cname)); |
| 800 | |
| 801 | } catch (UnknownHostException uhe) { |
| 802 | if (trustProxy) |
| 803 | return inProxyWeTrust(that); |
| 804 | } |
| 805 | |
| 806 | // make sure the first thing that is done here is to return |
| 807 | // false. If not, uncomment the return false in the above catch. |
| 808 | |
| 809 | return false; |
| 810 | } |
| 811 | |
| 812 | private boolean inProxyWeTrust(SocketPermission that) { |
| 813 | // if we trust the proxy, we see if the original names/IPs passed |
| 814 | // in were equal. |
| 815 | |
| 816 | String thisHost = hostname; |
| 817 | String thatHost = that.hostname; |
| 818 | |
| 819 | if (thisHost == null) |
| 820 | return false; |
| 821 | else |
| 822 | return thisHost.equalsIgnoreCase(thatHost); |
| 823 | |
| 824 | } |
| 825 | /** |
| 826 | * Checks two SocketPermission objects for equality. |
| 827 | * <P> |
| 828 | * @param obj the object to test for equality with this object. |
| 829 | * |
| 830 | * @return true if <i>obj</i> is a SocketPermission, and has the |
| 831 | * same hostname, port range, and actions as this |
| 832 | * SocketPermission object. However, port range will be ignored |
| 833 | * in the comparison if <i>obj</i> only contains the action, 'resolve'. |
| 834 | */ |
| 835 | public boolean equals(Object obj) { |
| 836 | if (obj == this) |
| 837 | return true; |
| 838 | |
| 839 | if (! (obj instanceof SocketPermission)) |
| 840 | return false; |
| 841 | |
| 842 | SocketPermission that = (SocketPermission) obj; |
| 843 | |
| 844 | //this is (overly?) complex!!! |
| 845 | |
| 846 | // check the mask first |
| 847 | if (this.mask != that.mask) return false; |
| 848 | |
| 849 | if ((that.mask & RESOLVE) != that.mask) { |
| 850 | // now check the port range... |
| 851 | if ((this.portrange[0] != that.portrange[0]) || |
| 852 | (this.portrange[1] != that.portrange[1])) { |
| 853 | return false; |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | // short cut. This catches: |
| 858 | // "crypto" equal to "crypto", or |
| 859 | // "1.2.3.4" equal to "1.2.3.4.", or |
| 860 | // "*.edu" equal to "*.edu", but it |
| 861 | // does not catch "crypto" equal to |
| 862 | // "crypto.eng.sun.com". |
| 863 | |
| 864 | if (this.getName().equalsIgnoreCase(that.getName())) { |
| 865 | return true; |
| 866 | } |
| 867 | |
| 868 | // we now attempt to get the Canonical (FQDN) name and |
| 869 | // compare that. If this fails, about all we can do is return |
| 870 | // false. |
| 871 | |
| 872 | try { |
| 873 | this.getCanonName(); |
| 874 | that.getCanonName(); |
| 875 | } catch (UnknownHostException uhe) { |
| 876 | return false; |
| 877 | } |
| 878 | |
| 879 | if (this.invalid || that.invalid) |
| 880 | return false; |
| 881 | |
| 882 | if (this.cname != null) { |
| 883 | return this.cname.equalsIgnoreCase(that.cname); |
| 884 | } |
| 885 | |
| 886 | return false; |
| 887 | } |
| 888 | |
| 889 | /** |
| 890 | * Returns the hash code value for this object. |
| 891 | * |
| 892 | * @return a hash code value for this object. |
| 893 | */ |
| 894 | |
| 895 | public int hashCode() { |
| 896 | /* |
| 897 | * If this SocketPermission was initialized with an IP address |
| 898 | * or a wildcard, use getName().hashCode(), otherwise use |
| 899 | * the hashCode() of the host name returned from |
| 900 | * java.net.InetAddress.getHostName method. |
| 901 | */ |
| 902 | |
| 903 | if (init_with_ip || wildcard) { |
| 904 | return this.getName().hashCode(); |
| 905 | } |
| 906 | |
| 907 | try { |
| 908 | getCanonName(); |
| 909 | } catch (UnknownHostException uhe) { |
| 910 | |
| 911 | } |
| 912 | |
| 913 | if (invalid || cname == null) |
| 914 | return this.getName().hashCode(); |
| 915 | else |
| 916 | return this.cname.hashCode(); |
| 917 | } |
| 918 | |
| 919 | /** |
| 920 | * Return the current action mask. |
| 921 | * |
| 922 | * @return the actions mask. |
| 923 | */ |
| 924 | |
| 925 | int getMask() { |
| 926 | return mask; |
| 927 | } |
| 928 | |
| 929 | /** |
| 930 | * Returns the "canonical string representation" of the actions in the |
| 931 | * specified mask. |
| 932 | * Always returns present actions in the following order: |
| 933 | * connect, listen, accept, resolve. |
| 934 | * |
| 935 | * @param mask a specific integer action mask to translate into a string |
| 936 | * @return the canonical string representation of the actions |
| 937 | */ |
| 938 | private static String getActions(int mask) |
| 939 | { |
| 940 | StringBuilder sb = new StringBuilder(); |
| 941 | boolean comma = false; |
| 942 | |
| 943 | if ((mask & CONNECT) == CONNECT) { |
| 944 | comma = true; |
| 945 | sb.append("connect"); |
| 946 | } |
| 947 | |
| 948 | if ((mask & LISTEN) == LISTEN) { |
| 949 | if (comma) sb.append(','); |
| 950 | else comma = true; |
| 951 | sb.append("listen"); |
| 952 | } |
| 953 | |
| 954 | if ((mask & ACCEPT) == ACCEPT) { |
| 955 | if (comma) sb.append(','); |
| 956 | else comma = true; |
| 957 | sb.append("accept"); |
| 958 | } |
| 959 | |
| 960 | |
| 961 | if ((mask & RESOLVE) == RESOLVE) { |
| 962 | if (comma) sb.append(','); |
| 963 | else comma = true; |
| 964 | sb.append("resolve"); |
| 965 | } |
| 966 | |
| 967 | return sb.toString(); |
| 968 | } |
| 969 | |
| 970 | /** |
| 971 | * Returns the canonical string representation of the actions. |
| 972 | * Always returns present actions in the following order: |
| 973 | * connect, listen, accept, resolve. |
| 974 | * |
| 975 | * @return the canonical string representation of the actions. |
| 976 | */ |
| 977 | public String getActions() |
| 978 | { |
| 979 | if (actions == null) |
| 980 | actions = getActions(this.mask); |
| 981 | |
| 982 | return actions; |
| 983 | } |
| 984 | |
| 985 | /** |
| 986 | * Returns a new PermissionCollection object for storing SocketPermission |
| 987 | * objects. |
| 988 | * <p> |
| 989 | * SocketPermission objects must be stored in a manner that allows them |
| 990 | * to be inserted into the collection in any order, but that also enables the |
| 991 | * PermissionCollection <code>implies</code> |
| 992 | * method to be implemented in an efficient (and consistent) manner. |
| 993 | * |
| 994 | * @return a new PermissionCollection object suitable for storing SocketPermissions. |
| 995 | */ |
| 996 | |
| 997 | public PermissionCollection newPermissionCollection() { |
| 998 | return new SocketPermissionCollection(); |
| 999 | } |
| 1000 | |
| 1001 | /** |
| 1002 | * WriteObject is called to save the state of the SocketPermission |
| 1003 | * to a stream. The actions are serialized, and the superclass |
| 1004 | * takes care of the name. |
| 1005 | */ |
| 1006 | private synchronized void writeObject(java.io.ObjectOutputStream s) |
| 1007 | throws IOException |
| 1008 | { |
| 1009 | // Write out the actions. The superclass takes care of the name |
| 1010 | // call getActions to make sure actions field is initialized |
| 1011 | if (actions == null) |
| 1012 | getActions(); |
| 1013 | s.defaultWriteObject(); |
| 1014 | } |
| 1015 | |
| 1016 | /** |
| 1017 | * readObject is called to restore the state of the SocketPermission from |
| 1018 | * a stream. |
| 1019 | */ |
| 1020 | private synchronized void readObject(java.io.ObjectInputStream s) |
| 1021 | throws IOException, ClassNotFoundException |
| 1022 | { |
| 1023 | // Read in the action, then initialize the rest |
| 1024 | s.defaultReadObject(); |
| 1025 | init(getName(),getMask(actions)); |
| 1026 | } |
| 1027 | |
| 1028 | /* |
| 1029 | public String toString() |
| 1030 | { |
| 1031 | StringBuffer s = new StringBuffer(super.toString() + "\n" + |
| 1032 | "cname = " + cname + "\n" + |
| 1033 | "wildcard = " + wildcard + "\n" + |
| 1034 | "invalid = " + invalid + "\n" + |
| 1035 | "portrange = " + portrange[0] + "," + portrange[1] + "\n"); |
| 1036 | if (addresses != null) for (int i=0; i<addresses.length; i++) { |
| 1037 | s.append( addresses[i].getHostAddress()); |
| 1038 | s.append("\n"); |
| 1039 | } else { |
| 1040 | s.append("(no addresses)\n"); |
| 1041 | } |
| 1042 | |
| 1043 | return s.toString(); |
| 1044 | } |
| 1045 | |
| 1046 | public static void main(String args[]) throws Exception { |
| 1047 | SocketPermission this_ = new SocketPermission(args[0], "connect"); |
| 1048 | SocketPermission that_ = new SocketPermission(args[1], "connect"); |
| 1049 | System.out.println("-----\n"); |
| 1050 | System.out.println("this.implies(that) = " + this_.implies(that_)); |
| 1051 | System.out.println("-----\n"); |
| 1052 | System.out.println("this = "+this_); |
| 1053 | System.out.println("-----\n"); |
| 1054 | System.out.println("that = "+that_); |
| 1055 | System.out.println("-----\n"); |
| 1056 | |
| 1057 | SocketPermissionCollection nps = new SocketPermissionCollection(); |
| 1058 | nps.add(this_); |
| 1059 | nps.add(new SocketPermission("www-leland.stanford.edu","connect")); |
| 1060 | nps.add(new SocketPermission("www-sun.com","connect")); |
| 1061 | System.out.println("nps.implies(that) = " + nps.implies(that_)); |
| 1062 | System.out.println("-----\n"); |
| 1063 | } |
| 1064 | */ |
| 1065 | } |
| 1066 | |
| 1067 | /** |
| 1068 | |
| 1069 | if (init'd with IP, key is IP as string) |
| 1070 | if wildcard, its the wild card |
| 1071 | else its the cname? |
| 1072 | |
| 1073 | * |
| 1074 | * @see java.security.Permission |
| 1075 | * @see java.security.Permissions |
| 1076 | * @see java.security.PermissionCollection |
| 1077 | * |
| 1078 | * |
| 1079 | * @author Roland Schemers |
| 1080 | * |
| 1081 | * @serial include |
| 1082 | */ |
| 1083 | |
| 1084 | final class SocketPermissionCollection extends PermissionCollection |
| 1085 | implements Serializable |
| 1086 | { |
| 1087 | // Not serialized; see serialization section at end of class |
| 1088 | private transient List perms; |
| 1089 | |
| 1090 | /** |
| 1091 | * Create an empty SocketPermissions object. |
| 1092 | * |
| 1093 | */ |
| 1094 | |
| 1095 | public SocketPermissionCollection() { |
| 1096 | perms = new ArrayList(); |
| 1097 | } |
| 1098 | |
| 1099 | /** |
| 1100 | * Adds a permission to the SocketPermissions. The key for the hash is |
| 1101 | * the name in the case of wildcards, or all the IP addresses. |
| 1102 | * |
| 1103 | * @param permission the Permission object to add. |
| 1104 | * |
| 1105 | * @exception IllegalArgumentException - if the permission is not a |
| 1106 | * SocketPermission |
| 1107 | * |
| 1108 | * @exception SecurityException - if this SocketPermissionCollection object |
| 1109 | * has been marked readonly |
| 1110 | */ |
| 1111 | |
| 1112 | public void add(Permission permission) |
| 1113 | { |
| 1114 | if (! (permission instanceof SocketPermission)) |
| 1115 | throw new IllegalArgumentException("invalid permission: "+ |
| 1116 | permission); |
| 1117 | if (isReadOnly()) |
| 1118 | throw new SecurityException( |
| 1119 | "attempt to add a Permission to a readonly PermissionCollection"); |
| 1120 | |
| 1121 | // optimization to ensure perms most likely to be tested |
| 1122 | // show up early (4301064) |
| 1123 | synchronized (this) { |
| 1124 | perms.add(0, permission); |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | /** |
| 1129 | * Check and see if this collection of permissions implies the permissions |
| 1130 | * expressed in "permission". |
| 1131 | * |
| 1132 | * @param p the Permission object to compare |
| 1133 | * |
| 1134 | * @return true if "permission" is a proper subset of a permission in |
| 1135 | * the collection, false if not. |
| 1136 | */ |
| 1137 | |
| 1138 | public boolean implies(Permission permission) |
| 1139 | { |
| 1140 | if (! (permission instanceof SocketPermission)) |
| 1141 | return false; |
| 1142 | |
| 1143 | SocketPermission np = (SocketPermission) permission; |
| 1144 | |
| 1145 | int desired = np.getMask(); |
| 1146 | int effective = 0; |
| 1147 | int needed = desired; |
| 1148 | |
| 1149 | synchronized (this) { |
| 1150 | int len = perms.size(); |
| 1151 | //System.out.println("implies "+np); |
| 1152 | for (int i = 0; i < len; i++) { |
| 1153 | SocketPermission x = (SocketPermission) perms.get(i); |
| 1154 | //System.out.println(" trying "+x); |
| 1155 | if (((needed & x.getMask()) != 0) && x.impliesIgnoreMask(np)) { |
| 1156 | effective |= x.getMask(); |
| 1157 | if ((effective & desired) == desired) |
| 1158 | return true; |
| 1159 | needed = (desired ^ effective); |
| 1160 | } |
| 1161 | } |
| 1162 | } |
| 1163 | return false; |
| 1164 | } |
| 1165 | |
| 1166 | /** |
| 1167 | * Returns an enumeration of all the SocketPermission objects in the |
| 1168 | * container. |
| 1169 | * |
| 1170 | * @return an enumeration of all the SocketPermission objects. |
| 1171 | */ |
| 1172 | |
| 1173 | public Enumeration elements() { |
| 1174 | // Convert Iterator into Enumeration |
| 1175 | synchronized (this) { |
| 1176 | return Collections.enumeration(perms); |
| 1177 | } |
| 1178 | } |
| 1179 | |
| 1180 | private static final long serialVersionUID = 2787186408602843674L; |
| 1181 | |
| 1182 | // Need to maintain serialization interoperability with earlier releases, |
| 1183 | // which had the serializable field: |
| 1184 | |
| 1185 | // |
| 1186 | // The SocketPermissions for this set. |
| 1187 | // @serial |
| 1188 | // |
| 1189 | // private Vector permissions; |
| 1190 | |
| 1191 | /** |
| 1192 | * @serialField permissions java.util.Vector |
| 1193 | * A list of the SocketPermissions for this set. |
| 1194 | */ |
| 1195 | private static final ObjectStreamField[] serialPersistentFields = { |
| 1196 | new ObjectStreamField("permissions", Vector.class), |
| 1197 | }; |
| 1198 | |
| 1199 | /** |
| 1200 | * @serialData "permissions" field (a Vector containing the SocketPermissions). |
| 1201 | */ |
| 1202 | /* |
| 1203 | * Writes the contents of the perms field out as a Vector for |
| 1204 | * serialization compatibility with earlier releases. |
| 1205 | */ |
| 1206 | private void writeObject(ObjectOutputStream out) throws IOException { |
| 1207 | // Don't call out.defaultWriteObject() |
| 1208 | |
| 1209 | // Write out Vector |
| 1210 | Vector permissions = new Vector(perms.size()); |
| 1211 | |
| 1212 | synchronized (this) { |
| 1213 | permissions.addAll(perms); |
| 1214 | } |
| 1215 | |
| 1216 | ObjectOutputStream.PutField pfields = out.putFields(); |
| 1217 | pfields.put("permissions", permissions); |
| 1218 | out.writeFields(); |
| 1219 | } |
| 1220 | |
| 1221 | /* |
| 1222 | * Reads in a Vector of SocketPermissions and saves them in the perms field. |
| 1223 | */ |
| 1224 | private void readObject(ObjectInputStream in) throws IOException, |
| 1225 | ClassNotFoundException { |
| 1226 | // Don't call in.defaultReadObject() |
| 1227 | |
| 1228 | // Read in serialized fields |
| 1229 | ObjectInputStream.GetField gfields = in.readFields(); |
| 1230 | |
| 1231 | // Get the one we want |
| 1232 | Vector permissions = (Vector)gfields.get("permissions", null); |
| 1233 | perms = new ArrayList(permissions.size()); |
| 1234 | perms.addAll(permissions); |
| 1235 | } |
| 1236 | } |